33.8% is the change from 497 to 665
Calculation steps:
[( 665 - 497 ) ÷ 497] x 100 = 33.8%
Formula
Percentage change = [(665 - 497) / 497] x 100
Subtract the new number by the original number
665 - 497 = 168
168 ÷ 497 = 0.3380281690140845
0.3380281690140845 x 100 = 33.8%